Raised Floor 2 : A platform with remove-able panels on which machines, often computers, are installed; the intervening space is used for housing complicated wiring or supplying conditioned air, or both
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}